Subway structure.



PATENTED MAR. 28, 1905.

J.. SIMPSON. SUBWAY STRUCTURE.

APPLICATION FILED AUG. 26, 1904.

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WHIHIIII WITNESSES. FEW 9/20 ATTORNEYS No. 786,059. PATENTED MAR. 28,1905.

- J. $IMPSON. SUB WAY STRUCTURE.

APPLIOATION FILED AUG. 26, 1904.

2 SHEETS-SHEET 2.

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ATTORNEYS T an 7 UNITED STAT S Patented March 2 8, 1905 PATENT OFFICE.

JAMES SIMPSON, OF VEEDERSBURG, INDIANA, ASSIGNOR OF ONE-HALF TO WILLIAMH. MALLORY, OF VEEDERSBURG, INDIANA.

SUBWAY STRUCTURE.

SPECIFICATION forming part of Letters Patent No. 786,059, dated March28, 1905.

'1'0 (tll/ 11/77/0771, it may concern:

Be it known that I, J AMns SIMPSON, a citizen of the United States, anda resident of Veedersburg, in the county of Fountain and StateofIndiana, have invented a new and Improved Subway Structure, of whichthe following is a full, clear, and exact description.

My invention relates to such subway structures as culverts and the like.Its principal objects are to provide organization of this characterwhich will be strong and may be readly erected.

Reference is to be had to the accompanying drawings, forming a part ofthis specification, in which similar characters of reference indicatecorresponding parts in all the figures.

Figure 1 is an end elevation of one embodiment of my invention,showingthe parts assembled. Fig. 2 is a broken top plan view thereof. Fig. 3 isa broken perspective view of one of the arch-sections. Fig. 4 is asimilar view of one of the arch-sills. Fig. 5 shows in perspective oneof the main wings. Fig. 6 is a similar view of one of theextension-wings. Fig. 7 shows in perspective the wing-sills separatedfrom one another, and Fig. 8 illustrates these last-named elementsformedin one piece.

A designates the arch member of my improved structure, which ispreferably formed in longitudinal sections 10, here shown as two innumber, they being of cylindrical shell form and each having anextension of substantially ninety degrees. When erected, they meetalongacentral longitudinal line 10. The sections may also be dividedtransversely at 10, and each of the end portions is shown as provided atits outer end with a wall or abutment 11. The arch sections rest attheir lower edges upon opposite sills 12 12, which may be divided intoportions corresponding in length to the arch members and are preferablyprovided with upwardly extending side walls or abutments 13, with whichthe arch-sections may contact to prevent lateral movement. Theseabutments extend for but a portion of the length of the sills, therebeing spaces 14 left at each end, into which the extremities of thearch-abutments 11 project.

At each side and at each end of the arch member is a main wing-sill 15,lying in substantially the same plane as the main sills and at rightangles thereto. These wing-sills have inclined ends 16, which areadapted to enter recesses 17 of similar form in the ends of ex tensionwing-sills 18. Each of the wing-sill members is shown as having an outerside wall or abutment 19, and the sills 18 also have end abutments 20.The wing-sills when laid assume the position clearly shown in Fig. 2 ofthe drawings, the angles of the extensions being conveniently about onehundred and thirty-five degrees with the wing-sills. Resting upon themain wing-sills, with their inner and lower corners projecting into thespaces 14, are main wing-walls 21, which are curved at 22 to conform tothe contour of the arch-sections and which contact along the adjacentouter surface with the abutments 13 of these sections. In the outer endof each of these walls 21 is shown an angular groove or recess 23,-withwhich may coact the angular end 24 of an extension wing-wall 25, whichrests upon the sill 18, the groove and projection being maintainedagainst separation by the contact of the end of this wall with thecompanion abutment 20. The outer edges of the extension-walls areconveniently inclined at 26. Attached to the inner face of each of themain wing-walls is shown a brace or retaining member 27, at the lowerend of which is a foot 28, projecting at substantially right angles andwhich may be anchored to any suitable member fixed within the embankmentsurrounding the structure.

As illustrated in Fig. 8, the wing-sills are formed in one piece 29,they being otherwise as previously described. This is particularlyadapted for light work, inwhich the members would not be rendered undulycumbersome. Obviously the wing-wall might be made in the same manner, ifdesired.

The various elements of my improved subway structure are preferablymolded in concrete, being ready to assemble at the time the ground isbroken for erection, this greatly facilitating progress, which is ofmuch importance in connection with work upon railroads and highways.After the earth has been removed, as is necessary, the sills are laid intheir proper relation to one another and the arches and wing-wallsplaced thereon, as is shown in Figs. 1 and 2. The braces, which arepreferably of steel or other suitable metal, are then secured to theiranchors, and the earth is filled in over the structure. It will be seenthat the sill-abutments take the outward or separating thrust betweenthe elements and that these same abutments upon the arches preventdisplacement between the wing-Walls and the arch member, said wingwallsbeing further secured by their braces and by the cooperation between thegrooves and projections in their adjacent ends. The sectionalarrangement not only renders the transportation of the elements anderection easier, but also permits some movement under such strains asthose arising from the heaving of the ground by frost, this preventingthe structure from cracking. The inclination of the extension wing-wallsdirects water from each side toward the arch and prevents it fromgetting back of the walls and washing out the embankment.

Having thus described my invention, I claim as new and desire to secureby Letters Patent- 1. A structure comprising an arch member, a mainwing-sill projecting therefrom, an extension wing-sill lying at an angleto the main wing-sill, and main and extension wingwalls resting upon thesills.

'2. A structure comprising an arch member, a main Wing-sill projectingtherefrom, an extension wing-sill lying at an angle to the mainwing-sill, one of said sills having a recess into which the otherextends, and main and extension wing-walls resting upon the sills.

3. A structure comprising an arch member, a main wing-sill projectingtherefrom, an extension wing-sill lying at an angle to the mainwing-sill, and main and extension wingwalls resting upon the sills, oneof said wingwalls having a recess into which the other extends.

4. A structure comprising an arch member, a main wing-sill projectingtherefrom, an extension wing-sill lying at an angle to the mainwing-sill, main and extension wing-Walls resting upon the sills, andbraces lying along the inner side of the main wing-wall and projectingsubstantially at right angles therefrom.

In testimony whereofI have signed my name to this specification in thepresence of two subscribing witnesses.

JAMES SIMPSON. Witnesses:

AUSTIN V. HI'roH, WILLIAM G. BRANDENBURG.

